中文摘要：

质子交换膜燃料电池已成为汽油内燃机动力最具竞争力的洁净取代动力源，其所用的富氢重整气中微量的CO对电池电极的毒化作用会严重降低燃料电池的效率。文章对采用选择性甲烷化法去除富氢重整气中微量CO的催化剂的研究现状进行了综述，简述了载体和改性助剂对催化剂性能的影响，并阐述了CO和CO2甲烷化过程机理的差异。

英文摘要：

Proton Exchange Membrane Fuel Cell （PEMFC） would be the most competitive clean substitute power source for the gasoline engine power, while the electrodes of the fuel cell is easily poisoned by the trace CO contained in the hydrogen-rich reformed gases, which would reduced PEMFC efficiency greatly. The Catalysts for se- lective methanation of trace CO in hydrogen-rich reformed gases were reviewed. The effects of supports and additives on the activities of catalysts were introduced briefly, and the differences of the mechanism of CO and CO2 methanation were also presented in detail.